The packaging is airtight and economical in use. Because the package is airtight, the liquid does not quickly cross date. You can treat at least 20 customers per bottle. 1 push (drop) is enough for 1 treatment.
Lotion 1: 12-15 minutes (the same as lotion 2)
Lotion 2: 12-15 minutes (the same as lotion 1)
Lotion 3: Boost & care (brush on the lashes)
Easy to use!